Such propaganda is laughable today but back in the 1880's when this book was actually published, so as to back-date Smith's "prophacies" LDS has spent tithes and offerings to shore up the frail BoM story as well as make up new non-historic stories like the ones in this tract:
Q. What does the Lord require of the people of the United States ?
A. He requires them to repent of all their sins and embrace the message of salvation, contained in the Book of Mormon, and be baptized into this church, and prepare themselves for the coming of the Lord.
Q. What will be the consequence if they do not embrace the Book of Mormon as a divine revelation ?
A. They will be destroyed from the land and sent down to hell, like all other generations who have rejected a divine message.
Q. In what way will the Lord destroy this nation if they reject the Book of Mormon ?
A. By a succession of the most, terrible judgments. Plague will follow plague in rapid succession, desolating populous cities and destroying hundreds of thousands. The rains of heaven will be staid, and the earth will not yield forth her wonted harvests, and thousands will pine away with hunger and perish. The bonds of the Union which now hold together the States of this Republic, will he severed, and a fearful, desolating, civil war will rage between the South and the North. The people then will no longer dwell upon their farms, and in their villages, and cities with security, but they will flee from city to city, and from State to State before the face of their enemies, and fear and terror will be upon them by day and night. The laws of the land will then be powerless, and the people will no longer be under their wholesome influence; bands of robbers and murderers will wander over the land unrestrained, and thus will the whole nation mourn and waste away and perish, unless they will hearken unto the great message which God has in mercy sent to them. There is no other alternative; they must either embrace the Book of Mormon as a divine revelation, or be cut off by judgments from the land, for it is the sure and certain decree of heaven.
Nothing at all happened as stated above.